#include "QPaintWidget.h"#include <iostream>#include "TCanvas.h"#include "TROOT.h"#include <QtCore/QTimer>#include <QDragEnterEvent>#include <QDropEvent>#include <QMouseEvent>#include <QWheelEvent>#include <QHelpEvent>#include <QCloseEvent>#include <QToolTip>#include <QFont>#include <QRect>#include <QPainter>